Environmental Issues Flashcards
almost ___ per cent forests have been lost in the
tropics, compared to only __ per cent in the temperate region
40
1
At the beginning of the twentieth century, forests covered about __ per cent of the land of
India. By the end of the century, it shrunk to _____ per cent
30
21.54
National Forest Policy was which year
1988
According to National Forest Policy, plains require ____% forest cover and hills require _____%
33
67
Amrita Devi Bishnoi which year
1731
Chipko movement where? Which year?
Garwhal Himalayas
1974
Joint Forests Management which year?
1980s
Two problems of Green revolution
Waterlogging and salinity
Snow blindness is?
Inflammation of cornea
Montreal Protocol was signed in?
1987 (effective in 1989)
without greenhouse effect the average temperature
at surface of Earth would have been a chilly _____°C rather than the present
average of ____°C.
–18
15
Clouds
and gases reflect about _____ of the
incoming solar radiation, and absorb some of
it but almost ___ of incoming solar radiation
falls on Earth’s surface heating it
¼th
½
During the past century, the
temperature of Earth has increased by ____°C
0.6
Relative contribution of CO2 CH4 CFCs N2O
60%
20%
14%
6%
Nuclear waste is buried ____m below the ground
500
Integrated organic farming initiated by ______ of _____?
Ramesh Chandra Dagar
Sonipat, Haryana
Polyblend increases road life by?
three times
against the price of Rs. ____ per kg that rag pickers had been getting for plastic waste, Khan now offers Rs.__
0.40
6.
Water (prevention and control of pollution) act was introduced in?
1974
Waste disposal into water without proper
treatment may cause an outbreak of serious diseases, such as
dysentery, typhoid, jaundice, cholera, etc.
heavy metals is defined as elements with density
> 5 g/cm3
Biomagnification is seen with
mercury and DDT
if it starts at 0.003 ppb (ppb = parts per billion) in water, it can ultimately reach 25 ppm (ppm = parts per million) in fish-eating birds
dk if you gotta study but still keep note
Particulate size less than ___ micron is harmful
2.5
Air (Prevention and Control of Pollution) Act was introduced in?
Amended to add noise in?
1981
1987
Brief exposure to ___ dB may permanently impair hearing ability
150
All the buses of Delhi were converted to run on CNG by the end of ______
2002
According to Euro III norms, sulphur is to be controlled at ____ppm in petrol and ___ppm in diesel
150
350
Aromatic hydrocarbons should be contained at ___% of the fuel
42
The goal is to decrease sulphur content to ____ppm in petrol and diesel, and reduce aromatic hydrocarbons to ____
50
35%
Which stage of Bharat Mass Emission Standards are we at
IV (13 major cities)
III (throughout the country)
scrubber sprays __ or __
water or lime
Eutrophication plants
marsh then bog
First step of Arcata?
conventional sedimentation, filtering, chlorine treatment
The second step of Arcata?
neutralize, assimilate and absorb
